Rearrangement Reaction of 2-Methyltetrahydropyrans Having A Cl'-Mesyloxy Group on the C2-Side Chain WIth Zinc Acetate:Ring Expansion and Ring Opening Reactions

摘要

Rearrangements of four ossible stereoisomers of 6-tert-butyl-2(1'-mesyloxy)ethyl-2-methyltetrahydropyran with Zn(OAc)_2 in aq. AcOH were invstigated. Rearrangement-ring expansion and/or rearrangement-ring opening reactions took place depending on the stereostructure of the substrates.